. city officials say the big pipe was designed to safely transport a massive amount of water underneath this road steering rain water away from homes but somehow it failed. on sunday morning, the road caved in - the crater is now huge, 80 feet long, 30 wide and 18 feet deep. the failure is under investigation, but in the meantime, the race is on to figure out how to put in another drainage system. city officials say if there is not a temporary fix put in before the next storm disasterous out here. >> we are expecting the rainfall on tuesday with heavy rain fall on wednesday. our expectation and goal is to get to the storm pipe by two mar at this time. if there remains exposed water is the enemy. when it comes to soil. if it comes in like this fully exposed it would be catastrophic. we are trying to get down to our storm drain so we can reassess it and get it working for wednesday. if not, we will have to do some temporary control measures and be prepared for the next storm measures. >> and a lafayette, terisa estacio, kron 4 news. >> narrow, winding roads in the santa cruz mountains.